Refactor how frames are sent from receiver

common/SendBuffer.cpp

@@ -0,0 +1,71 @@
+// Copyright (2019-2024) Paul Scherrer Institute
+
+
+#ifdef JFJOCH_USE_NUMA
+#include <numa.h>
+#endif
+#include <sys/mman.h>
+
+#include "SendBuffer.h"
+#include "JFJochException.h"
+
+SendBuffer::SendBuffer(size_t in_buffer_size)
+        : buffer_size(in_buffer_size) {
+
+#ifdef JFJOCH_USE_NUMA
+    buffer = (uint8_t *) numa_alloc_interleaved(buffer_size);
+#else
+    buffer = (uint8_t *) mmap (nullptr, buffer_size, PROT_READ | PROT_WRITE,
+                               MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) ;
+#endif
+    if (buffer == nullptr)
+        throw JFJochException(JFJochExceptionCategory::MemAllocFailed, "Failed to allocate communication buffer");
+
+    memset(buffer, 0, in_buffer_size);
+}
+
+SendBuffer::~SendBuffer() {
+#ifdef JFJOCH_USE_NUMA
+    numa_free(buffer, buffer_size);
+#else
+    munmap(buffer, buffer_size);
+#endif
+}
+
+void SendBuffer::SetBufferLocationSize(size_t in_location_size) {
+    if (buffer_size < in_location_size)
+        throw JFJochException(JFJochExceptionCategory::InputParameterInvalid, "Buffer is to small to hold even 1 image");
+
+    location_size = in_location_size;
+    location_number = buffer_size / in_location_size;
+}
+
+size_t SendBuffer::GetBufferLocationSize() const {
+    return location_size;
+}
+
+size_t SendBuffer::GetBufferLocationID(const uint8_t *ptr) const {
+    if (location_size == 0)
+        throw JFJochException(JFJochExceptionCategory::WrongNumber, "Buffer not initialized");
+    if (ptr < buffer)
+        throw JFJochException(JFJochExceptionCategory::WrongNumber, "Pointer outside of buffer location");
+
+    if (ptr >= buffer + buffer_size)
+        throw JFJochException(JFJochExceptionCategory::WrongNumber, "Pointer outside of buffer location");
+    return (ptr - buffer) / location_size;
+}
+
+size_t SendBuffer::GetNumOfLocations() const {
+    if (location_size == 0)
+        throw JFJochException(JFJochExceptionCategory::WrongNumber, "Buffer not initialized");
+    return location_number;
+}
+
+uint8_t *SendBuffer::GetBufferLocation(size_t id) {
+    if (location_size == 0)
+        throw JFJochException(JFJochExceptionCategory::WrongNumber, "Buffer not initialized");
+    if (id >= location_number)
+        throw JFJochException(JFJochExceptionCategory::ArrayOutOfBounds,
+                              "Image entry out of buffer bounds");
+    return buffer + location_size * id;
+}